201224583 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種喷墨塗佈裴置’其於液晶顯示裝置之製 造時，為了藉由使間隙物(spacer)粒子介於基板間而形成液 晶層封入用之間隙，故利用噴墨方式於基板上塗佈使間隙物 粒子分散之間隙物粒子分散液’藉此形成含有間隙物粒子之 間隙物區域。 【先前技術】 液晶顯示裝置，係於2片基板之間配置透明電極、彩色濾 光片及黑色矩陣，而且於透明電極間之空間具有封入液晶之 構成。此時，為了控制2片基板之間隙，並使液晶層之厚度 適當，而形成間隙物。 習知，此間隙雖利用光微影法所形成，必須有使用遮罩之 步驟，不僅使作業步驟繁雜，且存在材料之使用效率差之問 題。因此，揭示有藉由利用噴墨方式於基板喷出使間隙物粒 子分散之間隙物粒子分散液，而以間隙物粒子形成間隙物之 液晶顯示裝置之製造方法（參照專利文獻i)。 於如此之液晶顯示裝置之製造方法中，使用噴墨塗佈裝 置。即，使具備多數個喷出口之噴墨頭，對於液晶顯示裝置 用之透明基板進行相對移動，並自該等噴墨頭朝透明基板噴 出使間隙物粒子分散之間隙物粒子分散液，藉此於透明基板 之表面形成包含間隙物粒子之間隙物區域。 100122155 201224583 、、：使用於如此之嘴墨塗佈裝置之喷墨頭，係具備喷液用 ,夕數個[%兀件。於如此之噴墨塗佈裝置中使用壓電元件 喷出間隙物粒子分散液時，由於因噴墨頭之製造過程所導致 之不㈣將使構成噴墨頭之各喷嘴之特性難以固定。因 此’於習知之噴墨頭中，藉由針對每個壓電元件調整賦予各 壓電元件之電壓波形，而調整各㈣Μ出量（參照非專利 文獻1)。 [先行技術文獻] [專利文獻] 專利文獻1 :日本專利特開2〇〇5_4〇94號公報 非專淨j 文獻 1 · Konica Minolta Technology Report VOL.3(2006)第129頁顯示器製造用高精度喷墨頭之開發 【發明内容】 (發明所欲解決之問題） 如非專利文獻1所記載，即便於針對每個壓電元件調整賦 予各壓電元件之電壓波形而調整各喷嘴之喷出量之情況 下’亦很難針對每個壓電元件、及每次間隙物分散液之喷出 時間、或於使用複數個喷墨頭之情況下，完全消除於每個喷 墨頭所產生之間隙物粒子分散液之喷出趨勢。因此，存在由 於此喷出趨勢之微小差異，而使最終所製造之液晶顯示裝 置，產生因間隙物粒子所造成之壞點之問題。 本發明係為了解決上述課題而完成者，其目的在於提供一 100122155 4 201224583 置 種可有效防止因間隙物粒子所造成之壞點之嘴 (解決問題之手段） 、乂塗佈裝 申請專利範圍第！項所記載之發明，係•晶 製造時，為了藉由使_物粒子介於基__成液晶声封 入社_，故顧噴墨方式於基板上塗佈使卩切:八 散之間隙物粒子分散液，藉此形成含有間隙物粒子之H 區域之噴墨塗佈裝置；其特徵在於，其具備有：, 係多數個間隙物粒子分散液之噴出口朝同—方二 置，同時具備賴於^_物粒子分触自上述各喷出 口喷出之上述各喷出口之多數健電元件； 部，其係㈣來自上料朗之_錄子分散液的=2 態；而上述噴墨頭控制部’係具備有：對應於上述各壓電元 I牛之Μ電控制部’其具有藉由對上述各壓電科賦予既定波 形之驅動訊號而驅動上述錢電元件之壓電控制電路、儲存 複數個㈣之波师料儲存部、刻崎擇 波形資料儲存部之複數個波形資料中之一個波形之波开 ^ •擇手段；及㈣製作單元，其將用以自儲存於上述波形資料 '儲存部之複數個波形㈣中，選擇不同於每個上述壓電元件 控制部之波形資料之初始值資料，傳送至上述波形選擇手段。 申請專利範圍第2項所記载之發明，係如f請專利範圍第 \項之發明，其中，於上述壓電控制部中之波形選擇手段， 係具備將亂數賦予上述壓電控制電路之亂數產生器。 s. 100122155 5 201224583 申叫專利範圍第3項所記載之發明，係如申請專利範圍第 2項之發明，其中，上述亂數產生器，係產生虛擬亂數㈣— random number)之虛擬緣產生器；域資料製作單元，係 ⑽對每個上㈣電元件選財同_#狀方式，製作設 定虛擬亂數之初始值之初始值資料。 申請專利範圍第4_記載之發明，係如巾請專利範圍第 ^項之發明’其中’於上述壓電控制部中之波形選擇手段， 係具備將函數賦予上述壓電控制電路之函數控制器。 申請專利範圍第5項所記載之發明，係如申料"利範圍第 4項之發明’其中’上述函數控制器，係將正弦函數或餘弦 函數賦予上電元㈣；上述資料製作單元，細針對 個上述壓電元件各自·列波形資料^式製作設2 弦函數或餘弦函數之初始值與振幅之初始值資疋 (發明效果） 貝’、。 根據申請專利範圍第W所記载之發明，由於 電元件選擇不同之波形資料而噴出間隙物粒子分散液母= 使間隙錄子分散液之料量鼓 ° 物粒子所造叙壞點。 4可有效防止因間隙 :據申請專利範圍第2項所記載之發明，藉由利用_ 擇形貧料，可使間隙物粒子分散液之噴出量產生變化Γ 根據申請專利範圍第3項所呓截 不規則地選擇波形載之發明，可彻虛擬亂數 100122155 201224583 根據申請專利範圍第4項所記載之發明，藉由利用函數選 擇波形資料，可使間隙物粒子分散液之喷出量產生變化。 根據申請專利範圍第5項所記載之發明，町剎用正弦函數 或餘弦函數不規則地選擇波形資料。 【實施方式】 以下，根據圖式針對本發明之實施形態進行説明。首先， 關於利用藉由以喷墨方式於基板上塗佈使間_粒子分散 之間隙物粒子分散液，形成包含間隙物粒子之_物區域’ 並形成液晶層封入用之間隙的本發明之喷墨爹佈裝置的液 晶顯示裝置之製造方法進行說明。 圖1 ’係表示於表面喷出間隙物粒子分散浪之後之透明基 板1之一部分的局部表面圖。 此液晶顯示裝置之製造方法，係作為液晶之封入步驟等之 前步驟而執行者，其係藉由使間隙物粒子介於透明基板間而 用以形成液晶層封入用之間隙者。 於執行此液晶顯示裝置之製造方法時，首先’執行間隙物 ' 區域生成步騾。於此間隙物區域生成步驟中，藉由以喷墨方 ' 式於透明基板上喷出使間隙物粒子分散之間隙物粒子分散 液而形成包含間隙物粒子之間隙物區域。於此時，使用藉由 使排列設置多數個喷墨頭之噴墨頭單元對於透明基板1進 行相對移動，而於透明基板之表面噴出間隙物粒子分散液的 關於本發明之喷墨塗佈裝置。 100122155 7 201224583 於此透明基板1之表面，係由各自之像素區域即紅色之彩 色濾光片之區域R、綠色之彩色濾光片之區域G、藍色之彩 色濾光片之區域B、及劃分此等之像素區域之黑色矩陣7所 構成。而且，間隙物粒子分散液係，朝向黑色矩陣7喷出， 並於該處形成間隙物區域5。 繼間隙物區域生成步驟之後，執行乾燥步驟。此乾燥步 驟，係將透明基板1搬送至加熱板，並將此透明基板丨於加 熱板上進行加熱，藉此使揮發成分自間隙物粒子分散液中蒸 發，同時將間隙物區域5之間隙物粒子固著於透明基板i 之步驟。 於此步驟中，由於首先使揮發成分自間隙物粒子分散液中 蒸發，故藉由表面張力使間隙物區域5之間隙物粒子彼此相 互聚集而接觸。而且，將其等經燒結而相互固著，同時對於 透明基板1之表面亦以較強之力固著。因此，藉由此間隙物 區域5之間隙物粒子，可形成液晶層封入用之間隙。 接著，針對本發明之噴墨塗佈裝置之構成進行說明。圖 2，係關於本發明之喷墨塗佈裝置的斜視圖。 此喷墨塗佈裝置，係具備支撐透明基板丨之平台u、及 支撐12個喷墨頭單元12之支架13。平台u，係受到配設 於基台14上之線性馬達15之驅動，以由一對導向構件16 所引‘之狀態’朝與支架13之噴墨頭單元12之排列設置方 向正父之主掃描方向往返移動。因此，藉由一面使載置透明 100122155 8 201224583 基板1之平台11朝主掃描方向移動，一面利用12個喷墨頭 單元12喷出間隙物粒子分散液，可於透明基板1形成包含 間隙物粒子之間隙物區域。 於支架13之兩端部，配設一對線性馬達21，使支架13 經由此等線性馬達21而由基台14所支撐。因此，支架13， 係構成為藉由個別地驅動此等線性馬達21，可藉由平台11 變更與透明基板1之搬送方向的交叉角度。 於基台14之一端，配設清洗喷墨頭單元12之清潔部22。 此清潔部22，可藉由平台11朝與透明基板1之搬送方向正 交之方向往返移動。又，沿此清潔部22之移動路徑，配設 用以防止喷墨頭單元12乾燥之12個乾燥防止部23。下述 之各喷墨頭18，係於待機時，與此等乾燥防止部23對向地 配置。 圖3，係自支架13之底面所觀察的斜視圖。又，圖4，係 自喷墨頭單元12之底面所觀察的斜視圖。而且，圖5，係 自喷墨頭18之底面所觀察其一部分的斜視圖。 如此等圖式所示，於支撐於支架13之12個喷墨頭單元 12，配設有頭部支撐板17，於此頭部支撐板17，配設5個 喷墨頭18。於此噴墨頭.18，如圖5所示，單向地排列設置 多數個間隙物粒子分散液之喷出口 19。 圖6，係用以自喷墨頭18之間隙物粒子分散液之喷出口 19喷出間隙物粒子分散液之喷出單元的概要圖。 100122155 9 201224583 此喷出單元，係具備間隙物粒子分散液之供給口 52、及 上述間隙物粒子分散液之喷出口 19，並於其内部具有蓄積 間隙物粒子分散液之蓄積部51。該蓄積部51，係利用受驅 動電壓所驅動之壓電元件53推壓，而喷出間隙物粒子分散 液之液滴100。 圖7，係表示喷墨頭單元12之移動機構的斜視圖。再者， 於此圖式中，僅圖示12個喷墨頭單元12中之1個。 於支架13之透明基板1之搬送方向之兩端部，使線性導 軌24、線性標度尺25、及線性馬達26，朝向其長度方向與 透明基板1之搬送方向交叉之方向配設。而且，於支撐喷墨 頭單元12之支撐板27之底面配設有未圖示之線性馬達26 之可動子。 因此，各支撐板27，係以其兩端由線性導軌24引導之狀 態，藉由線性馬達26之驅動朝與透明基板1之搬送方向交 叉之方向移動。而且，其移動量，係由線性標度尺25所測 定。因此，藉由此喷墨頭單元12之移動機構，利用使各喷 墨頭單元12朝與透明基板1之搬送方向交叉之方向僅移動 所設定之移動量，可變更喷墨頭單元12之間距。_ 如上所述，支架13，係構成為藉由個別地驅動一對線性 馬達21，可變更藉由平台11之與透明基板1之搬送方向的 交叉角度。而且，藉由變更支架13之角度，支撐於支架13 之喷墨頭單元12之角度亦變更，伴隨於此，配設於喷墨頭 100122155 10 201224583 單元12之喷墨頭18的間隙物粒子分散液之喷出口 19之排 列設置方向與透明基板1之搬送方向之交叉角度會變更。 再者，如上所述，採用變更喷墨頭單元12之間距、及喷 墨頭18的間隙物粒子分散液之喷出口 19之排列設置方向與 透明基板1之搬送方向的交叉角度之構成，係由於如以下之 理由。 圖8，係表示在透明基板1之黑色矩陣7之間距與喷墨頭 18中之間隙物粒子分散液的喷出口 19之配置之關係的說明 圖。 黑色矩陣7之間距，係根據液晶顯示裝置之種類及其製造 商等而不同。為對應於如此之黑色矩陣7之間距，如圖8 所示，變更喷墨頭18之間隙物粒子分散液的喷出口 19之排 列設置方向與透明基板1之搬送方向之交叉角度即可。而 且，為了於複數個喷墨頭18之間調整間隙物粒子分散液之 喷出口 19之間距，係於相鄰之喷墨頭單元12間，變更喷墨 頭單元12彼此之距離即可。由於如此之理由，於此喷墨塗 佈裝置中，採用變更喷墨頭單元12之間距、及支架13與透 明基板1之搬送方向之交叉角度之構成。 在使用具有如上所述之構成之喷墨塗佈裝置而於透明基 板1塗佈間隙物粒子分散液時，首先，將透明基板1定位於 平台11上並予以固定。又，對應於透明基板1之黑色矩陣 7之間距，變更喷墨頭18之間隙物粒子分散液的喷出口 19 100122155 11 201224583 之排列設置方向與透明基板1之搬送方向之父叉角度、及喷 墨頭單元12之間距。 於此狀態下，一面使乎台11與透明基板1 一起朝主掃描 方向移動，一面藉由自12個喷墨頭單元12之各喷墨頭18 噴出間隙物粒子分散液，於透明基板1之黑色矩陣7上可形 成包含間隙物粒子之間隙物區域。 接著，針對控制來自上述喷墨頭18之間隙物粒子分散液 之喷出狀態之噴墨頭控制部的構成進行說明。圖9，係關於 本發明之第1實施形態之喷墨頭控制部60的方塊圖。 此噴墨頭控制部60，係具備分別與噴墨頭18之多數個壓 電元件53(參照圖6)連接之壓電控制部61、62".(於圖9中 僅圖示兩個）、及資料製作單元63。又，各壓電控制部61、 62··· ’分別具備亂數產生器71、壓電控制電路72、及波形 資料記‘1%體73。 ，各壓電控制電路72,係藉由對各壓電元件53賦予既定波 形之驅動訊號，用以驅動各壓電元 ' 0〇 , 使畜積於各嘖屮 早凡之畜積部51之間隙物粒子分散液自 、 娄 V 貧出〇 19喑屮 者又，各波形資料記憶體73，係儲存用 貝出 制電路乃之複數健形資料者。 ㈣予各麗電控 圖10 ’係以示意的方式表示儲存於各波形 之波形資料的說明圖。 '料記憶體 100122155 於壓電控胸咖__、形資料記憶. 12 73 201224583 1)中’儲存有自波形資料(編號1)至波形資料(編號η)為止之 η個波形資料。又’於壓電控制部62之波形資料記憶體73(波 形資料記憶體2)中’亦儲存有自波形資料(編號η至波形資 料(編號η)為止之η個波形資料。而且，於其他之壓電控制 部之波形資料記憶體73中，亦儲存有自波形資料(編號υ 至波形資料(編號η)為止之η個波形資料。此等波形資料， 係依照每個波形資料記憶體73而各自不同。 各亂數產生裔71，係由產生虛擬亂數之虛擬亂數產生器 所構成。即，各亂數產生器71，係根據自資料製作單元幻 所接收之初始值資料（亂數種子），產生固定之亂數，並將此 亂數傳迗至各麗電控制電路72。而且，各壓電控制電路a， 按照自各亂數產生器71所傳送之缝’選擇儲存於各波妒 資料記憶體73之η個波形資料之中之任一個，並根據所選 擇之波形資料，製作向各壓電元件53之驅動訊號。 再者，資料製作單元63，係以各亂數產生器7ι所產生 ===相，之方式’即，對每個壓電二 各自選擇不R波形賢料之方式，設杨始值 送。此資料製作單元63與各亂數產生器71，係作為仃傳 擇儲存於波形資料記憶體73之複數個波形資料之=用以選 波形之波形選擇手段而發揮功能。 之1個 於此噴墨頭控制部60中，各亂數產生器71， 料製作單元63所接收之初始值資料產 緣據自貪 王亂數。此虛擬亂數 100122155 13 201224583 係與儲細各波形㈣⑽體73之㈣㈣ 當4，數產生器71所傳送之亂數之資 料為1時’壓電控制電路72，係將波形資料記憶體73之波 形貧料(編號1)之記憶體位址傳送至波形資料記憶體73。波 形資料記憶體73，係相對於此，將波形資料(編號D傳送至 壓電控制電路72。 亂數產生器71，係於每次自壓電拎在丨丨+狄± 曰&电挖制電路72傳送間隙物 粒子分散液之喷出訊_對壓電㈣電路72傳送亂數，而 壓電控制電路72係於每次傳送喷出訊號時，自波形資料記 憶體73接收㈣波形而且’藉由根據該波形資料之 驅動訊號，驅動各壓電元件53。 圖U，係表示利用2個噴墨頭18喷出間隙物粒子分散液 時之喷出結果的示意圖。於此，圖u⑻係表示利用習知之 方式喷出間隙物粒子分散液之情形’而圖u(b)係表示利用 上述之喷墨頭控制部60之指令喷出間隙物粒子分散液之情 形。又，於此圖式中，對於虛線之左右之區域，係表示利用 互不相同之噴墨頭18噴出間隙物粒子分散液之情形。 於針對每個噴墨頭U之間隙物粒子分散液之噴出趨勢各 自不同之情況下，如圖11 (a)所示，會因各噴墨頭18而產生 噴出區域個別之壞點。然而，在使用適用本發明之噴墨頭控 制部60之情況下，如圖11(b)所示，由於各液滴之大小隨機 不同，故各f墨頭18之ι出區域個別之壞點幾乎不明顯。 100122155 14 201224583 於此，雖然一般印刷用之喷墨印表機，為了顏色之表現， 不宜隨機變更墨'水之液滴之大小，但如此發明，係於液晶顯 示裝置之製造時，由於利用使間隙物粒子介於基板間而形成 液晶層封入用之間隙，故在以喷墨方式於基板上塗佈使間隙 物粒子分散之間隙物粒子分散液時，即便於使圖1所示之黑 色矩陣7上之各間隙物區域5的液滴之大小隨機變化之情況 下，作為間隙物區域5之間隙物之功能亦不會受到妨礙，故 可較佳地採用上述構成。 再者，於圖11中，雖然已針對每個喷墨頭18之間隙物粒 子分散液之喷出趨勢各自不同之情形進行說明，但即便於針 對相同之喷墨頭18之每個喷出口 19之間隙物粒子分散液之 喷出傾向各自不同之情況下，亦與此相同，可防止習知所產 生之壞點之產生。 接著，針對喷墨頭控制部60之其他實施形態進行說明。 圖12，係本發明之第2實施形態之喷墨頭控制部60的方塊 圖。再者，針對與上述第1實施形態相同之構件，標註相同 之元件符號並省略詳細之說明。 關於此第2實施形態之喷墨頭控制部60，係於使用正弦 波控制器74代替第1實施形態之亂數產生器71之處，與上 述第1實施形態不同。 正弦波控制器74，係根據自資料製作單元63所接收之初 始值資料，產生不同週期之正弦波，並將此正弦波傳送至各 100122155 15 201224583 壓電控制電路72。而且，麵 %控制電路72 ’係按昭自久 正弦波控制器74所傳送之正弦 …各 ^ 皮選擇儲存於各波形資料 s己憶體73之η個波形資料中之 ^ - 任一個，並根據所選擇之波 形資料，製作向各壓電轉53之驅動訊號。 再者’資料製作單元63’係以各正弦波控制器％所產生 之正弦波之初始值互不相同之 ώ η . 式，即，以針對每個壓電控 制部選擇各自不同波形資料 ,,,5, ^ 、 方式，攻疋針對每個正弦波控 174之正弦波之初始值與其週期各自不同之初始值資料 並進行傳送。此資料製作單元6uiT2, + 貝科 早兀63與正弦波控制器74 ,係作 為用以選擇儲存於波形資料 己U體73之稷數個波形資料中 之1個波形之波形選擇手段而發揮功自卜 、 於此第2實施形態之喷墨頭控制部⑹中，正弦波控制器 % ’係根據自資料製作單元63所接收之初始值資料產生正 弦波。而且，各壓電控制電路72，係因應自正弦波控制哭 74、所傳送之正弦波之值，選擇儲存於各波形資料記憶體73 之波形資料之編號。例如，當1()時，將正弦波控制器 Μ之正弦波之值分割為1〇個階段，於該正弦波之值相當於 10個階段中之第一個之情況下，壓電控制電路π，係將波 幵料s己丨思體73之波形資料（編號1)之記憶體位址傳送至 波形資料記憶體73。波形資料記憶體73，係相對於此，將 波形資料(編號1)傳送至壓電控制電路72。 正弦波控制器74 ’係於每次自壓電控制電路72傳送間隙 100122155 16 201224583 物粒子分散液之喷出§fL號時，對壓電控制電路π傳送正弦 波之值，而壓電控制電路72係於每次傳送噴出訊號時，自 波形資料記憶體73接收新的波形資料。而且，利用根據該 波形資料之驅動訊號，驅動各壓電元件53。 圖13，係表不利用2個喷墨頭18噴出間隙物粒子分散液 日守之喷出結果的示意圖。於此，圖13(&)係表示利用習知之 方式喷出間隙物粒子分散液之情形，圖n(b)係表示利用第 2實施形態之喷墨頭控制部60之指令噴出間隙物粒子分散 液之情形。又，於此圖式中，對於虛線左右之區域，係表示 利用互不相同之喷墨頭18噴出間隙物粒子分散液之情形。 於針對每個喷墨頭18之間隙物粒子分散液之噴出趨勢各 自不同之情況下，如圖13(a)所示，會因各噴墨頭丨8而產生 噴出區域個別之壞點。然而，於使用適用本發明之噴墨頭控 制部60之情泥下，如® 13⑻所示，由於各液滴之大小因週 期性而不同，故各喷墨頭18之噴出區域個別之壞點幾乎不 明顯。 即便於本實施形態巾，於液晶顯示裝置之製造時，由於寿 用使間隙物粒子介於基板間㈣成液晶層封人用之間隙，由 在以喷墨方式於紐上塗錢_她子分狀間隙物米 子分散液時，即便於使圖i所示之黑色矩陣7上之各 區域W滴之大小規舰地變化之情況下，作為間隙_ 域5之間隙物之功能亦不會受到妨礙，故可較佳地採用上全 100122155 201224583 構成。 再者，於上述第2實施形態中，雖然利用藉由正 器74所產生之正弦函數，但亦可利用餘弦函數代替正^制 數。又，亦可使其賴期性地變化之連續函數、或2 函數。 【圖式簡單說明] 圖1係表示於表面喷出間隙物粒子分散液之後之透明基 板1之一部分的局部表面圖。 圖2係關於本發明n塗佈裝置的斜視圖。 圖3係自支糸13之底面所觀察的斜視圖。 圖4係自噴墨頭罝& ·-負早70 12之底面靦察的斜視圖。 圖5係自噴墨頭18 之底面所觀察其一部分的斜視圖 圖6係喷出單元的概要圖。 圖7係表^喷墨頭單元12之移動機構的斜視圖。 ㈤：、透明基板1之黑色矩陣7之間距與喷墨頭18 之間隙物粒子分散液的噴出口19之配置之關係的說明圖。 圖9係關於本發明之第1實施形態之嘴墨頭控制部60的 方塊圖。 圖10係以示音的 之波形資料__。 存於各波形資料記憶體73 八:r a#之)係表不利用2個嘴墨頭18喷出間隙物粒子 刀政液時H结果的示意圖。 100122155 18 201224583 圖12係關於本發明之第2實施形態之噴墨頭控制部60 的方塊圖。 圖13(a)及(b)係表示利用2個喷墨頭18喷出間隙物粒子 分散液時之喷出結果的示意圖。 【主要元件符號說明】 1 透明基板 5 間隙物區域 7 黑色矩陣 11 平台 12 喷墨頭單元 13 支架 14 基台 15 線性馬達 16 導向構件 17 頭部支撐板 18 喷墨頭 19 喷出口 21 線性馬達 22 清潔部 23 乾燥防止部 24 線性導執 25 線性標度尺 100122155 19 201224583 26 線性馬達 27 支撐板 51 蓄積部 52 供給口 53 壓電元件 60 喷墨頭控制部 61 ' 62 壓電控制部 63 資料製作單元 71 亂數產生器 72 壓電控制電路 73 波形資料記憶體 74 正弦波控制部 100 間隙物粒子分散液之液滴 B 藍色之彩色濾光片之區域 G 綠色之彩色濾光片之區域 R 紅色之彩色濾光片之區域 100122155 20201224583 VI. Description of the Invention: [Technical Field] The present invention relates to an inkjet coating device which is formed in the manufacture of a liquid crystal display device in order to interpose a spacer particle between substrates Since the liquid crystal layer is sealed in the gap, the spacer particle dispersion liquid in which the spacer particles are dispersed is applied onto the substrate by the inkjet method to form a spacer region containing the spacer particles. [Prior Art] A liquid crystal display device has a transparent electrode, a color filter, and a black matrix disposed between two substrates, and has a structure in which a liquid crystal is sealed in a space between the transparent electrodes. At this time, in order to control the gap between the two substrates and to make the thickness of the liquid crystal layer appropriate, a spacer is formed. Conventionally, although this gap is formed by photolithography, it is necessary to have a step of using a mask, which not only complicates the work procedure, but also has a problem that the use efficiency of the material is poor. For this reason, a method of manufacturing a liquid crystal display device in which spacers are formed by dispersing spacer particles in a substrate by an inkjet method to form interstitial particles is disclosed (see Patent Document i). In the method of manufacturing such a liquid crystal display device, an inkjet coating device is used. In other words, the ink jet head having a plurality of discharge ports is relatively moved with respect to the transparent substrate for the liquid crystal display device, and the spacer particle dispersion liquid for dispersing the spacer particles is discharged from the ink jet head toward the transparent substrate. A spacer region including spacer particles is formed on the surface of the transparent substrate. 100122155 201224583 、,: The ink jet head used in such a nozzle ink coating device is provided with a liquid jet for a few days [%]. When the piezoelectric element is used for such an ink jet coating apparatus to eject the spacer particle dispersion, the characteristics of the nozzles constituting the ink jet head are difficult to be fixed due to the manufacturing process of the ink jet head. Therefore, in the conventional ink jet head, the amount of each of the (four) turns is adjusted by adjusting the voltage waveform applied to each of the piezoelectric elements for each piezoelectric element (see Non-Patent Document 1). [Prior Art Document] [Patent Document] Patent Document 1: Japanese Patent Laid-Open No. 2〇〇5_4〇94 Bulletin Non-Special Net Document 1 · Konica Minolta Technology Report VOL.3 (2006) Page 129 High Precision for Display Manufacturing In the development of the inkjet head, the problem of the invention is as follows. In this case, it is also difficult to completely eliminate the gap generated by each ink jet head for each piezoelectric element, the ejection time of each spacer dispersion, or the use of a plurality of ink jet heads. The tendency of the particle dispersion to eject. Therefore, there is a slight difference in the discharge tendency, and the liquid crystal display device finally produced has a problem of a defective point due to the spacer particles. The present invention has been made to solve the above problems, and an object of the present invention is to provide a nozzle for effectively preventing the occurrence of a defect caused by particles of a spacer (a means for solving the problem), and a coating application patent application number. ! In the invention described in the section, in order to manufacture the crystal by the liquid crystal, the liquid crystal is sealed by the inkjet method, so that the tantalum is cut by the inkjet method: An inkjet coating device for forming a H region containing spacer particles by a particle dispersion liquid, comprising: a plurality of outlets of a plurality of spacer particle dispersions facing each other at the same time Depending on the ^_ object particles, the plurality of electromechanical components of the respective ejection outlets ejected from the respective ejection outlets; the portion (4) is from the =2 state of the recording medium dispersion liquid; The head control unit ′ is provided with a piezoelectric control circuit that drives the above-described money and electric component by a driving signal that applies a predetermined waveform to each of the piezoelectric units. And storing a plurality of (4) wave material storage units, a wave of the plurality of waveform data of the Kawasaki wave data storage unit, and a (4) production unit, which is to be self-storing the waveform In the data of the 'storage department' (multiple waveforms) Data different from the initial value of the waveform data of each of the piezoelectric element of the control unit, transmitted to said waveform selecting means. The invention described in the second aspect of the invention is the invention of the invention, wherein the waveform selection means in the piezoelectric control unit is provided with a random number to the piezoelectric control circuit. Random generator. s. 100122155 5 201224583 The invention described in claim 3 is the invention of claim 2, wherein the random number generator generates a virtual edge generated by a random number (four) - random number The domain data creation unit is configured to create an initial value data for setting an initial value of the virtual random number for each of the upper (four) electrical components. The invention described in the fourth aspect of the invention is the invention of the invention, wherein the waveform selection means in the piezoelectric control unit is provided with a function controller for imparting a function to the piezoelectric control circuit. . The invention described in claim 5 of the patent application is the invention of the fourth aspect of the invention, wherein the above-mentioned function controller assigns a sine function or a cosine function to the power-on element (4); For each of the above-described piezoelectric elements, the waveform data of the two types of strings are used to create the initial value of the 2-string function or the cosine function and the initial value of the amplitude (invention effect). According to the invention described in Patent Application No. W, the spacer particles are dispersed by the selection of different waveform data of the electrical component, and the amount of the spacer recording liquid is caused to cause a dead pixel. 4 can effectively prevent the gap: According to the invention described in the second paragraph of the patent application, by using the _ shape-selective material, the discharge amount of the spacer particle dispersion can be changed Γ according to the third paragraph of the patent application scope. The invention of the waveform loading is irregularly selected, and the random number 100122155 201224583 can be changed according to the invention described in claim 4, by using the function to select the waveform data, the discharge amount of the spacer particle dispersion can be changed. . According to the invention described in the fifth aspect of the patent application, the sinusoidal function or the cosine function irregularly selects the waveform data. [Embodiment] Hereinafter, embodiments of the present invention will be described based on the drawings. First, the spray of the present invention is formed by applying a spacer particle dispersion in which the inter-particles are dispersed by the inkjet method to form a spacer region containing the spacer particles and forming a gap for sealing the liquid crystal layer. A method of manufacturing a liquid crystal display device of an inkjet device will be described. Fig. 1' is a partial surface view showing a portion of the transparent substrate 1 after the surface of the surface of the spacer particles is dispersed. The method of manufacturing the liquid crystal display device is performed as a pre-step of a liquid crystal sealing step or the like, which is formed by interposing spacer particles between the transparent substrates to form a gap for sealing the liquid crystal layer. In the execution of the manufacturing method of the liquid crystal display device, the step of "executing the spacer" region is first performed. In the spacer region forming step, a spacer region containing the spacer particles is formed by ejecting the spacer particle dispersion liquid for dispersing the spacer particles on the transparent substrate by an ink jet method. At this time, an inkjet coating apparatus according to the present invention is disclosed in which a spacer particle dispersion is sprayed on the surface of a transparent substrate by relatively moving the ink jet head unit in which a plurality of ink jet heads are arranged to each other. . 100122155 7 201224583 The surface of the transparent substrate 1 is a region R of a red color filter, a region G of a green color filter, a region B of a blue color filter, and A black matrix 7 is formed which divides the pixel regions of these. Further, the spacer particle dispersion liquid is ejected toward the black matrix 7, and the spacer region 5 is formed there. Following the spacer region generation step, a drying step is performed. In the drying step, the transparent substrate 1 is transferred to the heating plate, and the transparent substrate is heated on the heating plate to evaporate the volatile components from the spacer particle dispersion while the spacers of the spacer region 5 are The step of fixing the particles to the transparent substrate i. In this step, since the volatile component is first evaporated from the spacer particle dispersion, the spacer particles of the spacer region 5 are brought into contact with each other by surface tension. Further, they are sintered while being fixed to each other, and are also fixed to the surface of the transparent substrate 1 with a strong force. Therefore, a gap for sealing the liquid crystal layer can be formed by the spacer particles in the spacer region 5. Next, the configuration of the inkjet coating device of the present invention will be described. Figure 2 is a perspective view of an ink jet coating apparatus of the present invention. This ink jet coating apparatus is provided with a stage u for supporting a transparent substrate, and a holder 13 for supporting twelve ink jet head units 12. The platform u is driven by the linear motor 15 disposed on the base 14 to be oriented by the pair of guide members 16 in the direction of the arrangement of the head unit 12 with the holder 13 The scanning direction moves back and forth. Therefore, by moving the spacer 11 on which the transparent 100122155 8 201224583 substrate 1 is placed in the main scanning direction, the spacer particle dispersion is ejected by the twelve inkjet head units 12, whereby spacer particles can be formed on the transparent substrate 1. Interstitial area. A pair of linear motors 21 are disposed at both ends of the bracket 13, so that the bracket 13 is supported by the base 14 via the linear motor 21 thus. Therefore, the holder 13 is configured to individually drive the linear motors 21, and the angle of intersection with the conveyance direction of the transparent substrate 1 can be changed by the stage 11. At one end of the base 14, a cleaning portion 22 for cleaning the ink jet head unit 12 is disposed. The cleaning unit 22 is reciprocally movable in a direction orthogonal to the conveying direction of the transparent substrate 1 by the stage 11. Further, 12 drying prevention portions 23 for preventing the ink jet head unit 12 from drying are disposed along the moving path of the cleaning portion 22. Each of the ink jet heads 18 described below is disposed opposite to the drying prevention portion 23 during standby. Figure 3 is a perspective view from the bottom surface of the bracket 13. Further, Fig. 4 is a perspective view as seen from the bottom surface of the ink jet head unit 12. Further, Fig. 5 is a perspective view of a part of the ink jet head 18 as viewed from the bottom surface thereof. As shown in the drawings, the head unit 17 is disposed on the twelve head units 12 supported by the holder 13, and the head supporting plate 17 is provided with five ink-jet heads 18. In this ink jet head 18, as shown in Fig. 5, a plurality of discharge ports 19 of the spacer particle dispersion are arranged unidirectionally. Fig. 6 is a schematic view showing a discharge unit for ejecting the spacer particle dispersion from the discharge port 19 of the spacer particle dispersion of the ink jet head 18. 100122155 9 201224583 The discharge unit includes a supply port 52 for the spacer particle dispersion and a discharge port 19 for the spacer particle dispersion, and has an accumulation portion 51 for accumulating the spacer particle dispersion therein. The accumulating portion 51 is pressed by the piezoelectric element 53 driven by the driving voltage to eject the droplets 100 of the spacer particle dispersion. Fig. 7 is a perspective view showing the moving mechanism of the ink jet head unit 12. Further, in this figure, only one of the twelve ink jet head units 12 is illustrated. The linear guide rails 24, the linear scales 25, and the linear motor 26 are disposed at both end portions of the transparent substrate 1 in the transport direction of the holder 13 in a direction in which the longitudinal direction thereof intersects with the transport direction of the transparent substrate 1. Further, a movable member of a linear motor 26 (not shown) is disposed on the bottom surface of the support plate 27 supporting the ink jet head unit 12. Therefore, each of the support plates 27 is moved by the linear motor 26 in a direction in which the both ends are guided by the linear guides 24 in the direction intersecting the transport direction of the transparent substrate 1. Moreover, the amount of movement is measured by a linear scale 25. Therefore, by the moving mechanism of the ink jet head unit 12, the distance between the ink jet head units 12 can be changed by moving only the set moving amount in the direction in which the respective ink jet head units 12 intersect the transport direction of the transparent substrate 1. . As described above, the holder 13 is configured to be capable of changing the angle of intersection of the stage 11 with the conveyance direction of the transparent substrate 1 by individually driving the pair of linear motors 21. Further, by changing the angle of the holder 13, the angle of the head unit 12 supported by the holder 13 is also changed, and accordingly, the spacer particles dispersed in the head 18 of the unit 12 of the head 100122155 10 201224583 are dispersed. The angle of intersection between the arrangement direction of the liquid discharge ports 19 and the conveyance direction of the transparent substrate 1 is changed. In addition, as described above, the angle between the arrangement direction of the ink jet head unit 12 and the arrangement direction of the discharge port 19 of the spacer particle dispersion of the ink jet head 18 and the transport direction of the transparent substrate 1 is used. For the following reasons. Fig. 8 is an explanatory view showing the relationship between the distance between the black matrixes 7 of the transparent substrate 1 and the arrangement of the ejection orifices 19 of the spacer particle dispersion in the ink jet head 18. The distance between the black matrices 7 differs depending on the type of the liquid crystal display device, its manufacturer, and the like. In order to correspond to the distance between the black matrixes 7, as shown in Fig. 8, the angle between the arrangement direction of the discharge ports 19 of the spacer particle dispersion of the ink jet head 18 and the conveyance direction of the transparent substrate 1 may be changed. Further, in order to adjust the distance between the ejection orifices 19 of the spacer particle dispersion between the plurality of inkjet heads 18, the distance between the inkjet head units 12 may be changed between adjacent inkjet head units 12. For this reason, in the ink jet coating apparatus, a configuration is adopted in which the distance between the head units 12 and the angle of intersection of the holder 13 and the conveying direction of the transparent substrate 1 are changed. When the spacer particle dispersion is applied to the transparent substrate 1 by using the inkjet coating apparatus having the above configuration, first, the transparent substrate 1 is positioned on the stage 11 and fixed. Further, in accordance with the distance between the black matrices 7 of the transparent substrate 1, the discharge opening of the spacer particle dispersion liquid of the ink jet head 18 is changed, and the arrangement direction of the arrangement of the transparent substrate 1 and the transfer direction of the transparent substrate 1 and the ejection are changed. The distance between the ink head units 12. In this state, while the stage 11 and the transparent substrate 1 are moved together in the main scanning direction, the spacer particle dispersion is ejected from the respective inkjet heads 18 of the twelve inkjet head units 12, and the transparent substrate 1 is used. A spacer region including spacer particles can be formed on the black matrix 7. Next, a configuration of an ink jet head control unit that controls the discharge state of the spacer particle dispersion from the ink jet head 18 will be described. Fig. 9 is a block diagram showing an ink jet head control unit 60 according to the first embodiment of the present invention. The ink jet head control unit 60 includes piezoelectric control units 61 and 62 which are respectively connected to a plurality of piezoelectric elements 53 (see FIG. 6) of the ink jet head 18 (only two are shown in FIG. 9). And data creation unit 63. Further, each of the piezoelectric control units 61, 62, ... has a random number generator 71, a piezoelectric control circuit 72, and a waveform data "1% body 73". Each of the piezoelectric control circuits 72 is driven by a predetermined waveform for each piezoelectric element 53 to drive each piezoelectric element '0〇, so that the animal accumulates in each of the early stages 51. The interstitial particle dispersion liquid is depleted from 娄V, and the waveform data memory 73 is stored in a plurality of shape data. (4) Electronic control for each ray Figure 10' shows an explanatory diagram of waveform data stored in each waveform in a schematic manner. 'Material memory 100122155 in the piezoelectric control chest coffee __, shape data memory. 12 73 201224583 1) in the 'stored from the waveform data (number 1) to the waveform data (number η) η waveform data. Further, in the waveform data memory 73 (waveform data memory 2) of the piezoelectric control unit 62, η waveform data from the waveform data (number n to waveform data (number η)) are also stored. The waveform data memory 73 of the piezoelectric control unit also stores η waveform data from the waveform data (number υ to waveform data (number η)). The waveform data is based on each waveform data memory 73. Each of the chaotic generations 71 is composed of a virtual random number generator that generates a virtual random number. That is, each random number generator 71 is based on the initial value data received from the data creation unit. The number of seeds is generated, and a random number is generated, and the random number is transmitted to each of the power control circuits 72. Further, each of the piezoelectric control circuits a is selected and stored in accordance with the slits transmitted from the random number generators 71. Any one of the n pieces of waveform data of the data memory 73 is generated, and a driving signal to each piezoelectric element 53 is generated based on the selected waveform data. Further, the data creating unit 63 is generated by each random number. Produced by 7ι = == phase, the way 'that is, for each piezoelectric two, each selects the mode of not R waveform, and sets the initial value. This data creation unit 63 and each random number generator 71 are used as the 仃 仃 storage. The plurality of waveform data of the waveform data memory 73 is used to select a waveform selection means for selecting a waveform. One of the inkjet head controllers 60 is provided by each of the random number generators 71 and the material producing unit 63. The initial value of the data received is based on the number of ransom. This virtual random number is 100122155 13 201224583 and the waveforms of the storage (4) (10) body 73 (4) (4) When the data of the random number transmitted by the number generator 71 is 1 ' The piezoelectric control circuit 72 transmits the memory address of the waveform poor material (No. 1) of the waveform data memory 73 to the waveform data memory 73. The waveform data memory 73 is related to the waveform data (number D). The transmission to the piezoelectric control circuit 72. The random number generator 71 is configured to transmit the ejection of the spacer particle dispersion liquid from the piezoelectric 拎 狄 狄 狄 amp amp 电 电 _ _ (4) The circuit 72 transmits the random number, and the piezoelectric control circuit 72 is transmitted every time. When the ejection signal is sent, the (four) waveform is received from the waveform data memory 73 and the piezoelectric elements 53 are driven by the driving signal according to the waveform data. Fig. U shows that the spacers are ejected by the two ink ejection heads 18. Fig. u(8) shows a state in which the spacer particle dispersion is ejected by a conventional method, and Fig. u(b) shows the use of the above-described inkjet head control unit 60. In the case of the pattern, the area around the dotted line indicates the case where the spacer particle dispersion is ejected by the ink jet heads 18 which are different from each other. When the ejection tendency of the spacer particle dispersion of the inkjet head U is different, as shown in Fig. 11 (a), individual ejection points are generated due to the respective inkjet heads 18. However, in the case of using the ink jet head control portion 60 to which the present invention is applied, as shown in Fig. 11 (b), since the sizes of the respective droplets are randomly different, the individual dots of the respective areas of the f ink head 18 are dead pixels. Almost unobvious. 100122155 14 201224583 Here, although the inkjet printer for general printing does not need to randomly change the size of the ink droplets for the color, the invention is based on the use of the liquid crystal display device. When the spacer particles are interposed between the substrates to form a gap for sealing the liquid crystal layer, when the spacer particle dispersion for dispersing the spacer particles is applied onto the substrate by an inkjet method, even if the black matrix shown in FIG. 1 is used. When the size of the droplets in each of the spacer regions 5 is randomly changed, the function as the spacer of the spacer region 5 is not hindered, so that the above configuration can be preferably employed. In addition, in FIG. 11, although the discharge tendency of the spacer particle dispersion liquid of each inkjet head 18 has been described, respectively, even for each of the ejection ports 19 of the same inkjet head 18 In the case where the discharge tendency of the spacer particle dispersions is different, the occurrence of the bad points which are conventionally generated can be prevented. Next, another embodiment of the ink jet head control unit 60 will be described. Figure 12 is a block diagram of an ink jet head control unit 60 according to a second embodiment of the present invention. The same components as those of the first embodiment are denoted by the same reference numerals, and the detailed description thereof will be omitted. The ink jet head control unit 60 of the second embodiment differs from the above-described first embodiment in that a sine wave controller 74 is used instead of the random number generator 71 of the first embodiment. The sine wave controller 74 generates sine waves of different periods based on the initial value data received from the data creating unit 63, and transmits the sine waves to the respective 100122155 15 201224583 piezoelectric control circuit 72. Moreover, the face % control circuit 72' is selected to be stored in each of the n waveform data of each waveform data s y y y y y y y y y y y y y Based on the selected waveform data, a driving signal to each of the piezoelectric transducers 53 is produced. Further, the 'data creation unit 63' is configured such that the initial values of the sine waves generated by the respective sine wave controllers are different from each other, that is, the respective waveform data are selected for each piezoelectric control unit, , 5, ^, mode, attack and initial value data for each sine wave of each sine wave controller 174 and its period are different and transmitted. The data creation unit 6uiT2, + Becco 63 and the sine wave controller 74 function as a waveform selection means for selecting one of a plurality of waveform data stored in the waveform data of the U body 73. In the ink jet head control unit (6) of the second embodiment, the sine wave controller %' generates a sine wave based on the initial value data received from the data creating unit 63. Further, each of the piezoelectric control circuits 72 selects the number of the waveform data stored in each waveform data memory 73 in response to the value of the sine wave transmitted from the sine wave control 74. For example, when 1(), the value of the sine wave of the sine wave controller is divided into 1 phase, and the piezoelectric control circuit is obtained when the value of the sine wave is equivalent to the first of 10 stages. π, the memory address of the waveform data (number 1) of the wave material 73 丨 丨 73 is transmitted to the waveform data memory 73. In contrast to this, the waveform data memory 73 transmits waveform data (No. 1) to the piezoelectric control circuit 72. The sine wave controller 74' is configured to transmit a value of a sine wave to the piezoelectric control circuit π every time the piezoelectric control circuit 72 transmits a gap §fL from the piezoelectric control circuit 72 to transmit a gap 100122155 16 201224583, and the piezoelectric control circuit The 72 system receives new waveform data from the waveform data memory 73 each time the ejection signal is transmitted. Further, each piezoelectric element 53 is driven by a driving signal based on the waveform data. Fig. 13 is a view showing the results of the ejection of the spacer particle dispersion without using the two ink-jet heads 18. Here, Fig. 13 (&) shows a case where the spacer particle dispersion is ejected by a conventional method, and Fig. n(b) shows that the spacer particles are ejected by the instruction of the head control unit 60 of the second embodiment. The case of dispersion. Further, in the figure, the area around the broken line indicates the case where the spacer particle dispersion is ejected by the ink jet heads 18 which are different from each other. When the discharge tendency of the spacer particle dispersion liquid for each of the ink-jet heads 18 is different, as shown in Fig. 13 (a), individual ejection points are generated due to the respective ink jet heads 8 . However, in the case of using the ink jet head control portion 60 to which the present invention is applied, as shown in Fig. 13 (8), since the size of each liquid droplet varies depending on the periodicity, individual ejection points of the ejection regions of the respective ink jet heads 18 are individual. Almost unobvious. That is, in the manufacture of the liquid crystal display device, in the manufacture of the liquid crystal display device, the spacer particles are interposed between the substrates (4) to form a gap for the liquid crystal layer to be sealed, and the ink is applied by the inkjet method. In the case of the interstitial dispersion of the rice, even if the size of the droplets of the respective regions W on the black matrix 7 shown in Fig. i is changed, the function of the spacer as the gap_domain 5 is not hindered. Therefore, it can be preferably constructed using the full 100122155 201224583. Further, in the second embodiment described above, the sine function generated by the controller 74 is used, but the cosine function may be used instead of the positive number. In addition, it is also possible to make a continuous function or a 2 function that changes its duration. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial surface view showing a portion of a transparent substrate 1 after a surface of a spacer particle dispersion is sprayed. Figure 2 is a perspective view of the n coating apparatus of the present invention. Fig. 3 is a perspective view as seen from the bottom surface of the support 13. Fig. 4 is a perspective view of the bottom surface of the ink jet head 罝 & Fig. 5 is a perspective view of a part of the ink jet head 18 as viewed from the bottom surface thereof. Fig. 6 is a schematic view of the discharge unit. Fig. 7 is a perspective view showing the moving mechanism of the ink jet head unit 12. (5): An explanatory diagram of the relationship between the distance between the black matrixes 7 of the transparent substrate 1 and the arrangement of the ejection orifices 19 of the spacer particle dispersion liquid of the inkjet head 18. Fig. 9 is a block diagram showing the nozzle head control unit 60 according to the first embodiment of the present invention. Fig. 10 shows the waveform data __ of the sound. It is stored in each waveform data memory 73 (8:r a#). The system does not use the two nozzles 18 to eject the spacer particles. 100122155 18 201224583 Fig. 12 is a block diagram showing an ink jet head control unit 60 according to a second embodiment of the present invention. Fig. 13 (a) and (b) are schematic diagrams showing the results of discharge when the spacer particle dispersion is ejected by the two ink jet heads 18. [Main component symbol description] 1 Transparent substrate 5 Interstitial region 7 Black matrix 11 Platform 12 Inkjet head unit 13 Bracket 14 Base 15 Linear motor 16 Guide member 17 Head support plate 18 Inkjet head 19 Ejection port 21 Linear motor 22 Cleaning unit 23 Drying prevention unit 24 Linear guide 25 Linear scale 100122155 19 201224583 26 Linear motor 27 Support plate 51 Accumulation part 52 Supply port 53 Piezoelectric element 60 Ink head control unit 61 '62 Piezoelectric control unit 63 Data production Unit 71 random number generator 72 Piezoelectric control circuit 73 Waveform data memory 74 Sine wave control unit 100 Droplet particle dispersion liquid droplet B Blue color filter area G Green color filter area R Red color filter area 100122155 20